AM437x IDK board has a User Switch which we can
program to whatever we want. Because this board
doesn't have a PMIC which can give us power button
presses, let's use this user switch as a gpio-keys
power button.
Signed-off-by: Felipe Balbi <ba...@ti.com>
---
Changes since v1:
- Add explicit pinctrl data.
(note that ball reset state is already MUX_MODE7, and even
though it was already working before, as can be seen from
v1's boot logs, it's best that we cope with possibly broken
bootloaders)
depends on [1]. Boot logs at [2]. Note that this can rather easily
be folded into the original patch if so desired.
[1] http://marc.info/?l=linux-omap&m=141928747902983&w=2
[2] http://hastebin.com/qezicehunu
arch/arm/boot/dts/am437x-idk-evm.dts | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts
b/arch/arm/boot/dts/am437x-idk-evm.dts
index b52dd0a..f9a17e2 100644
--- a/arch/arm/boot/dts/am437x-idk-evm.dts
+++ b/arch/arm/boot/dts/am437x-idk-evm.dts
@@ -96,9 +96,29 @@
regulator-boot-on;
vin-supply = <&v1_5dreg>;
};
+
+ gpio_keys: gpio_keys {
+ compatible = "gpio-keys";
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpio_keys_pins_default>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch@0 {
+ label = "power-button";
+ linux,code = <KEY_POWER>;
+ gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
+ };
+ };
};
&am43xx_pinmux {
+ gpio_keys_pins_default: gpio_keys_pins_default {
+ pinctrl-single,pins = <
+ 0x1b8 (PIN_INPUT | MUX_MODE7) /* cam0_field.gpio4_2 */
+ >;
+ };
+
i2c0_pins_default: i2c0_pins_default {
pinctrl-single,pins = <
0x188 (PIN_INPUT | SLEWCTRL_FAST | MUX_MODE0) /*
i2c0_sda.i2c0_sda */
@@ -282,6 +302,10 @@
status = "okay";
};
+&gpio4 {
+ status = "okay";
+};
+
&gpio5 {
status = "okay";
};
--
2.2.0
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